Array Shutdown Order in Peer Persistence

When Peer Persistence is enabled, you can shut down either or both of your arrays at the same time using the shutdown option in the GUI. However, to minimize any impacts to your application environment, it is recommended that you power down and power up your arrays in the following order:

  • Power Down:
    1. Power down the Backup Group Leader (BGL) first
    2. Power down the Group Leader (GL) second
    IMPORTANT: Make sure you have disabled ASO (group --edit --auto_switchover_enabled no) before powering down the Backup Group Leader.
  • Power Up:
    1. Power up the Group Leader first
    2. Power up the Backup Group Leader second
    IMPORTANT: Make sure to enable ASO (group --edit --auto_switchover_enabled yes) after you have powered up the arrays.

Shutting Down Only the BGL or Only the GL

In certain situations, you might have the need to shut down only the Backup Group Leader or only the Group Leader. For example, in a Peer Persistence group, you will have an array in separate sites and you might need to shut down one site for planned maintenance. In that scenario, it is recommended that you perform a handover of synchronously replicated volume collections and migrate the group leader role to the surviving node before you shut down the array.